Towel bar bracket



FIG. 1 is a top plan view of a towel bar bracket showing my new design, the broken-line disclosure of a portion of a towel bar in this and the following views is for illustrative purposes only and forms no part of the claimed design.

FIG. 2 is a front elevation view;

FIG. 3 is a bottom plan view;

FIG. 4 is a rear elevation view;

FIG. 5 is a perspective view;

FIG. 6 is a right side elevation view; and,

FIG. 7 is a left side elevation view. 

The ornamental design for a towel bar bracket, as shown and described. 